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Patients are randomly assigned to either the oral RAE tube group (Group O) or the reinforced tube group (Group R). In both groups, tracheal intubation is performed using a videolaryngoscope without a stylet, and the first-attempt success rate is compared. Upon emergence from anesthesia and removal of the endotracheal tube, the degree of subglottic injury is assessed and compared between the groups. In addition, postoperative sore throat and hoarseness are evaluated and compared at 1 hour and 24 hours after surgery.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| oral RAE tube group | Experimental |
| |
| reinforced tube group | Active Comparator |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| endotracheal tube | Device | Tracheal intubation is performed using a videolaryngoscope without a stylet. In Group O, an oral RAE tube is used, while in Group R, a reinforced endotracheal tube is used. Intubation is conducted after induction of general anesthesia. Upon completion of surgery, the endotracheal tube is removed, and the degree of subglottic injury is assessed. Postoperative sore throat and hoarseness are evaluated at 1 hour and 24 hours after extubation. |
| Measure | Description | Time Frame |
|---|---|---|
| First-attempt success rate of tracheal intubation | The proportion of patients in whom tracheal intubation is successfully completed on the first attempt using a videolaryngoscope without a stylet, comparing the oral RAE tube group with the reinforced tube group. | Immediately after induction of anesthesia |
| Measure | Description | Time Frame |
|---|---|---|
| Incidence and grade of subglottic airway injury | Assessed using flexible bronchoscopy at the time of extubation; graded on a 0-3 scale | Immediately after completion of surgery (at extubation) |
| Postoperative sore throat score |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| KYUNG WON SHIN | Contact | 02-2072-2469 | skwskw126@gmail.com |
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Sore throat severity assessed using the Numeric Rating Scale (NRS, 0-10) at 1 and 24 hours after surgery.
| 1 hour and 24 hours postoperatively |
| Incidence of postoperative hoarseness | Binary evaluation (presence or absence) of hoarseness at 1 and 24 hours after surgery. | 1 hour and 24 hours postoperatively |
| Cormack-Lehane grade and POGO score | Airway visualisation was assessed during tracheal intubation using the Cormack-Lehane grading system (Grade I-IV, where Grade I indicates full view of the glottis and Grade IV indicates no visible glottic structures; lower grades indicate better glottic visualisation) and the Percentage of Glottic Opening (POGO) score (0-100%, where higher scores indicate better glottic visualisation). | Periprocedural (during tracheal intubation) |
| Mean blood pressure | Periprocedural (immediately before and immediately after tracheal intubation) |
| Heart rate | Periprocedural (immediately before and immediately after tracheal intubation) |
| Oxygen saturation | Periprocedural (immediately before and immediately after tracheal intubation) |
| Bispectral index | Periprocedural (immediately before and immediately after tracheal intubation) |